Closure.



W. R. OOMINGS.

URI

APPLICATION FILED PE 907. RENEWED SEPT. 14, 1908.

Pat

ented Dec. 1,1908.

specification.

writim men'ran commas, or wnlBtEnoN PARK, ENGLAND.

' CLOSURE.

Application filed I'ebruary e; 1007, Saddle.

To all whom it'may concern:

Be it known that I, WILLIAM RIGHTER Commas, mechanical engineer, citizen of the United States, residing at Wimbledon Park, in the county of Surrey, England, have invented certain new and useful Improvements in Closures, of which the following is a According to this invention it is proposed to make expanding and contracting articles by means of plaited folds formed on dished disks or other sha ed material, whereby a wide range ofelastwity isimparted to comparatively inelastic material, so that the articles formed in this way are capable of a large amount of expansion and contraction. 'n order to take advantage .of these properties to the fullest extent I use with the articles so made, a similar but stiffer dished disk. This disk when inverted and laced inside theplaited article will expand and contract in unison with it according to the pressure applied. It will thus act as a distender, and when pressed down canbe locked in that position and so maintain the article in an expanded condition.

Articles as described may be made from a large range of materials such as metal, cellu loid, paper, gelatin, parchment, rubber and other substances, or with two or more such materials combined, and may be usefully applied on account of their elastic action to such purposes as sto pers, man hole, barrel,

and other covers, li s and closures, and for a variety of other purposes.

In order that my invention may be clearly understood I will describe one application. of

the same by reference to the accompanying drawing in which':

Figure 1 is'a erspective view of a stop er formed from a ished disk. Fig. 2 is a plan of the same. Fig. 3 is an enlarged view of the elastic plaits before being flattened. Fig. 4 is a view of a dished disk or distender with folds or corrugations. Fig. 5 is a plan of the same. Fig. 6 is a section of a stopper before being expanded. Fig. 7 is a plan of a.

dished disk for forming into a stopper. Fig.

Fig. 9 shows Fig. 10

8 is a side view of the same. the same with flattened down folds.

I is a perspective view of an elastic expansible and contractible dished disk fully formed. Fig. 11 is a section of the stopper shown in Fig. 6 but expanded by the distender, which is shown pressed down to its fullest extent.

In carrying out my invention in the form Specification 0! Letters Patent.

866,081. Renewed September 14, 1008. Serial No. 462.082.

Patented Dec. 1, 1908.

illustratedIiirst-im ress a disk-1 of cardboard or other material, ig. 7, with corru ations 8, which causes the material to be rawn up into a dish shaped form, Fig. 8. The corrugations in the, next stage areformed into plaits, shown enla ed in Fig. 3, and flattened down as in ig. 9, when thus formed the article will be found to possess elastic properties which may be applied in practice to various purposes, or it may be further operated upon in suitable dies to produce a dished disk with rim or flange, Fig. 10.

Figs. 1 and 10 show a stopper formed as described with the plaits carried to the center. In this form it may be used as a simple elastic cork like stopper, or b using another dished disk, or distender 3 aving corrugations 4, as shown in Fig. 4, inside the body of the stopper, it may be expanded as shown in Fig.11, pressure being applied to the top of the distender 3 by hand or mechanical means.

In order that the stopper may be expanded in any particular art a stop or latform 7 of the required heig t' Fi 6 is p seed in the bottom, and to enable t is to be done, I employ comparatively loose folds where most expansion is required, and bring said folds together by pressure where required to be less elastic, as shown at 10.

To render the distender 3 extra stifl' I fill the top recess with a lug 5 shown in Fig. 6. Used alone these (fistenders form useful springs and may be applied to prevent shock to fragile articles by. lnterposmgthem between the articles and the sides of the casein which they may be carried.

Articles constructed b this method may be conveniently forme in suitable dies adapted, first to creaseor corrugate the material then to fold the corrugations and fiatten them thus forming elastic plaits preferabg of the box plait type.-

aving now particularly described and ascertained'the nature of this invention and in what manner the same is to be performed I declare that what I claim is 1. A closure, having its body portion formed in radial folds or plaits extending to its edge, said folds or plaits being flattened down.

2. A closure, formed from a circular piece of material having its edges upturned annularl and having its body portion formed in radial folds or plaits that extend through said upturned portion.

3. closure,.formed from a circular piece of material having its edge upturned annularly and formed in radial folds or plaits extending through said upturned portion, said folds or plaits being flattened down.

4. A closure, embodying a body portion I having its edge upturned annularly, and an elastic ex )ansible distender adapted to fit into said annularly.

5. A closure, embodying a body portion having its edge upturned annularly, and an elastic dished expansible distender adapted to fit into said body portion to expand the latter annularly.

ody portion to expand the latter 6. In a closure, the combinationwith a body (Iportionformcd in radial folds or plaits,

istender adapted to lit into said body of 8, portion to expand the latter annularly.

7. In a closure, the combination with a body portion formed in radial folds or plaits,

of a dished distender adapted to fit into said body portion to expand the latter annularly.

8. In a closure, the combination with a body ortion formed from a circular piece of material having its edge upturned annularly and formed in radial folds or plaits extending through said upturned upturned portion to expand the latter annularly.

9. In a closure, the combination with a body portion formed in radial folds or plaits, of a dished distender formed in radial corrugations and adapted to fit into said body portion to expand the latterannularly.

10. In a closure, the combination with a body portion formed from a circular piece of material having its edge upturned annularly and formed in radial folds or plaits extendortion, of a dished distender adapted to 't within said j and formed in radial folds or plaits extend ing through said upturned portion, a dished distender adapted to fit within said upturned portion to expand the latter annularly, and asto within said upturned portion to position said distender.

12. A distender for closures, formed of a circular piece of material having radial corrugations therein causing said distender to assume a dished shape.

13. A distender for closures, formed of a circular piece of material having radial corrugations therein causingv said distender to assume a dished shape, said corrugations being flattened into folds or plaits.

14. A distender for closures, formed of a center and having radial corrugations eX- tending from said recess, whereby said disi tender is caused to assume a dished sha e.

15. A distender for closures, forme of a I circular piece of material recessed at its I center, having radial corrugations extending i from said recess, whereby said distender is i caused to assume a dished shape, and having 5 a stiffening plug fitted into said recess.

16. Aclosure formed from a circular piece of material having its edges upturned annularly and formed in radial folds or plaits extending through said upturned portion, said folds or plaits in said upturned portion being i spread apart at one portion, and brought together at another portion.

17.- In a closure, the combination with a body portion having an annular upturned edge, of a dished distender formed in radial folds or plaits and adapted to be flattened 2 within said body portion to expand its annular upturned edge.

In testimony whereof I have signed my name to this specification in the presence of f two sulmcribing witnesses I WILLIAM RIGH'IER COMINGS.

Witnesses l H. D. JAMESON, i F. L. RAND.

circular piece of material recessed at its 

